Mitsubishi Electric A800 Plus Series, Function Manual

Page: 48 / 242

Parameter setting procedure for dancer feedback speed control
DANCER FEEDBACK SPEED CONTROL
47
3
8
Actual line speed input setting
Set Pr.362 according to the line speed command value input method for calculating the winding diameter (actual
line speed method). (Setting is not required for the intermediate shaft.)
∗1
To perform Vector control, install the Vector control compatible option.
∗2
The input specification in the initial setting is indicated. (Refer to page 43 .)
The following table shows setting examples.
9
PID control action setting
Set the following parameters for PID control.
∗1 Set the parameter according to the specification of the machine used.
Pr. Name Setting Input method
362 Actual line speed input selection
0 (initial value) V* (line speed command)
1
Terminal JOG single-phase pulse train input (Refer to page
164 )
2
FR-A8AP/FR-A8AL/FR-A8TP encoder pulse train input
(complementary 12 V / differential 5 V (A-, B-phases))
∗1
(Refer to page 164 )
3
Terminal 2 (analog value: 0 to 100%) (0 to 5 VDC)
∗2
(Refer to
page 165 )
4
Terminal 4 (analog value: 20 to 100%) (4 to 20 mADC)
∗2
(Refer to page 165 )
5
Terminal 1 (analog value: -100 to 100%) (0 to ± 10 VDC)
∗2
(Refer to page 165 )
6
Terminal 6 (FR-A8AZ) (analog value: -100 to 100%) (0 to
±
10 VDC)
∗2
(Refer to page 165 )
7
FR-A8AL single-phase pulse train input (PP, NP) (Refer to
page 164 )
9999 No function
Item Setting example 1 Setting example 2
Actual line speed input
method
Setting by analog current (4 to 20 mA) input
through terminal 4 (
Pr.362 = "4")
Setting by pulse train input through terminal JOG
(
Pr.362 = "1")
Parameter setting
Pr.280 Actual line speed voltage/current bias
= 20%
Pr.281 Actual line speed bias = 0 m/min
Pr.278 Actual line speed voltage/current
gain
= 100%
Pr.279 Actual line speed gain = Maximum line
speed
Pr.384 Input pulse division scaling factor
≠
"0"
Pr.281 Actual line speed bias = 0 m/min
Pr.282 Actual line speed pulse input bias = 0
kpps
Pr.279 Actual line speed gain = Maximum line
speed
Pr.283 Actual line speed pulse input gain =
Maximum number of pulses
Pr. Name Setting Remarks
128 PID action selection 40 or 41
40: Dancer feedback speed control (reverse action)
41: Dancer feedback speed control (forward action)
131 PID upper limit
∗1
Set the value (0.1% increment) for outputting the PID upper limit
(FUP) signal.
132 PID lower limit
∗1
Set the value (0.1% increment) for outputting the PID lower limit
(FDN) signal.
133 PID action set point
∗1
Set the set point (0.01% increment) for the dancer roll control.
Pr.279
(Maximum line speed)
Pr.281
(0 m/min)
4 mA
Pr.280
(20%)
Analog input value
20 mA
Pr.278
(100%)
Actual line speed
Pr.279
(Maximum line speed)
6553.4
Pr.281
(0 m/min)
Pr.282
(0 kpps)
Number of input pulses
Pr.283
(Maximum number
of pulses)
Actual line speed